Add Wingify to USERS.md
Add Wingify to USERS.md

VWO, the flagship product of Wingify, uses RocksDB to populate the list of URLs where clients can run A/B test campaigns. It is also used to provide a way for the clients to see if VWO's Smart Code is installed on a specific URL of their account.

bbiao/rocksdb,Andymic/rocksdb,norton/rocksdb,vmx/rocksdb,tsheasha/rocksdb,ryneli/rocksdb,wenduo/rocksdb,Andymic/rocksdb,vmx/rocksdb,flabby/rocksdb,tsheasha/rocksdb,jalexanderqed/rocksdb,flabby/rocksdb,wat-ze-hex/rocksdb,jalexanderqed/rocksdb,SunguckLee/RocksDB,Andymic/rocksdb,wenduo/rocksdb,ryneli/rocksdb,jalexanderqed/rocksdb,hobinyoon/rocksdb,facebook/rocksdb,norton/rocksdb,flabby/rocksdb,norton/rocksdb,OverlordQ/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,jalexanderqed/rocksdb,tsheasha/rocksdb,vmx/rocksdb,wat-ze-hex/rocksdb,wenduo/rocksdb,wat-ze-hex/rocksdb,facebook/rocksdb,hobinyoon/rocksdb,OverlordQ/rocksdb,ryneli/rocksdb,facebook/rocksdb,vmx/rocksdb,Andymic/rocksdb,Andymic/rocksdb,hobinyoon/rocksdb,facebook/rocksdb,norton/rocksdb,facebook/rocksdb,tsheasha/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,ryneli/rocksdb,Andymic/rocksdb,OverlordQ/rocksdb,SunguckLee/RocksDB,ryneli/rocksdb,OverlordQ/rocksdb,hobinyoon/rocksdb,Andymic/rocksdb,SunguckLee/RocksDB,OverlordQ/rocksdb,flabby/rocksdb,hobinyoon/rocksdb,norton/rocksdb,OverlordQ/rocksdb,facebook/rocksdb,vmx/rocksdb,flabby/rocksdb,jalexanderqed/rocksdb,wenduo/rocksdb,bbiao/rocksdb,wat-ze-hex/rocksdb,wenduo/rocksdb,tsheasha/rocksdb,jalexanderqed/rocksdb,SunguckLee/RocksDB,bbiao/rocksdb,wenduo/rocksdb,wenduo/rocksdb,bbiao/rocksdb,Andymic/rocksdb,ryneli/rocksdb,SunguckLee/RocksDB,hobinyoon/rocksdb,flabby/rocksdb,bbiao/rocksdb,OverlordQ/rocksdb,vmx/rocksdb,jalexanderqed/rocksdb,wenduo/rocksdb,vmx/rocksdb,bbiao/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,flabby/rocksdb,norton/rocksdb,SunguckLee/RocksDB,ryneli/rocksdb,facebook/rocksdb,vmx/rocksdb,bbiao/rocksdb,wat-ze-hex/rocksdb,tsheasha/rocksdb,SunguckLee/RocksDB,wat-ze-hex/rocksdb,facebook/rocksdb,bbiao/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,SunguckLee/RocksDB